﻿using System;
using MvvmFx.Windows.Data;

namespace BoundTreeView.Framework
{
    public class InverseBooleanConverter : IValueConverter
    {
        #region IValueConverter Members

        public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
            if (targetType != typeof (bool))
                throw new InvalidOperationException("The target must be a boolean");

            return !(bool) value;
        }

        public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
            throw new NotSupportedException();
        }

        #endregion
    }
}